You aren't familiar with how the media works are you? Everything is denied when leaked early. If you think they would release a tweet or a facebook update explaining how their plans to get back together were foiled by a website, you'd be foolish.
Which is why they should just shouldn't comment on it. Isn't that normally "how media works"? You don't release a statement. If someone asks, you say "I'm not going to comment on that at this time". I personally can't think of any situations off the top of my head where flat out denial occurs even though its actually sure.